Background: Cases of hindlimb digital extensor weakness of unknown etiology have been observed in Norway since 1995. Hypothesis: We hypothesized that the observed bilateral extensor weakness was attributable to neuropathy of the distal nerves and that this was related to environmental factors, possibly dietary. Animals: Seventy-five horses with digital extensor weakness occurring from 1995 to 2004 are described. Methods: Eleven horses were examined at The Norwegian School of Veterinary Science, and the medical records of 64 horses seen in ambulatory practice were reviewed. Results: There was no apparent sex, age, or breed predilection, but the majority were horses kept for pleasure or breeding purposes. Clinical signs varied from intermittent knuckling of the hindlimbs to paraplegia. Some horses showed no or only slow progression of signs, whereas others developed severe signs within hours. No other neurologic deficits were detected in any of the horses. Epidemiologic data and laboratory results were not supportive of an infectious etiology. The only common factor for all affected horses seemed to be feeding big bale silage or, occasionally, hay of poor microbiologic quality. Forty of the 75 horses were euthanized. Histopathologic examination of peripheral nervous tissue was performed in 22 horses, all of which had neuronal fiber degeneration. The majority of horses with mild signs recovered after 5-6 months of rest. Conclusions and Clinical Importance: Clinical signs correlated with polyneuropathy involving sciatic nerves.

cfu/g) on ruminal digestion, fermentation and protozoa population. Ruminal pH, acetate, propionate, degradation rate and effective degradability were significantly affected by the forage sources. The addition of SC caused an increase in degradability of forage neutral detergent fibre (NDF), and tended

Fresh 7 day growth Bermudagrass-clipping lawn pellets (Cynodon dactylon

The World-Wide Web has achieved global connectivity stimulating the transition of computers from knowledge processors to knowledge sources. But the Web and its client software are seriously deficient for supporting users' interactive use of this information. This paper presents two related

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. Cows were fed total mixed diets containing corn silage (CS), 50 % corn silage and 50% alfalfa hay (CSAH), or alfalfa hay (AH) as the forage source. All diets had a 50:50 forage-to-concentrate ratio, contained 15 % DDGS, and were formulated to be equal in metabolizable protein. Dry matter intake

Investigations on the effects of forage source and feed particle size on ruminal fermentation and microbial protein synthesis in vitro

group foraging behavior. We manipulated two types of information that animals might use in determining where to allocate their foraging time. These sources of information are the distributions of resources and of other foragers. Undermatching and Overmatching Although the assumption of optimal foraging

ABSTRACT- The objective of this study was to evaluate performance and biometrics of lambs fed different sources of forage. Twenty-four six-month-old Santa Inês female lambs were randomly allocated to four experimental diets and housed in individual stalls. They weighed on average 26.35±0.20 kg

This paper offers an explanation of behavior that puzzled entomologists and economists. Ants, faced with two identical food sources, were observed to concen-trate more on one of these, but after a period they would turn their attention to the other. The same phenomenon has been observed in humans